Technology and cars: facts, separated from claims.
Source-credited technology stories and guide selections on electric and hybrid cars, petrol/diesel vehicles, crash tests, robotics, and practical products.
Company performance and cost figures on this page are attributed to the source unless stated otherwise. This is not investment, purchasing, or engineering advice.
Robots on site / 2026-07-28
A robot printer built the barracks walls: 10 buildings at Fort Bliss
ICON says it used 3D printing for 10 barracks at Fort Bliss. The figures come from the company; they do not mean every construction task was done by a robot.
The scale reported by the company
ICON’s July 28, 2026 announcement reports 10 barracks, more than 78,000 square feet of interior space, capacity for 560 people, and 58 days of printing. These should be read as figures in the company’s project announcement, not as independently verified results.
What is—and is not—being printed?
A concrete printer can form layered wall elements; roofing, doors and windows, reinforcement, utilities, insulation, site preparation, and inspections remain separate tasks. It would therefore be inaccurate to generalize this as “the whole building was completed in 58 days.”
A concrete printer is no longer just a machine: ICON presents Titan as a job-site system
The Titan announcement bundles robotics with software, materials, architectural support, training, and service. Savings and speed figures are company projections, not guarantees.
The product is a workflow
In its March 11, 2026 Titan announcement, ICON describes more than a standalone printer: a commercial package involving software, printing materials, architectural planning, training, and service. That framing highlights how on-site setup and operational expertise matter alongside print quality.
How to read the cost claims
Cost and efficiency comparisons in the announcement are ICON projections based on its own assumptions. Actual project costs change with land, design, permits, labor, transport, utilities, and local building rules; the same savings cannot be assumed for every home.
A 12-apartment 3D-printing project in France: the real test is comparison with conventional construction
PERI announced the launch of ViliaSprint2, a three-storey, 12-home project. The announcement described a project at its start—not a claim of completion or results.
What makes the project notable
PERI 3D Construction’s April 4, 2025 announcement said the three-storey, 12-home ViliaSprint2 project in France had begun, with a plan to compare it against a conventionally built structure of the same design. That makes the intended comparison of the full process and costs as important as printing speed.
A launch notice is not a completion report
At the source’s publication date, the project had started; the announcement did not provide a completed building, independent measurements, or final costs. It should not be described as finished without separately verifying its current status.
Source credit: PERI 3D Construction, “ViliaSprint2 project announcement”, 2025-04-04
3D-printed buildings / 2024-01-30
A wave-shaped façade in Heidelberg: 170 printing hours, not the build time for the whole project
PERI says the Wavehouse’s custom façade took about 170 hours to print. The “largest in Europe” description also comes from the company’s announcement.
The architecture is the story
PERI’s January 30, 2024 Wavehouse announcement says the project in Heidelberg used concrete printing for its wave-shaped façade elements, with about 170 printing hours. That figure refers to printing the façade components, not the completion schedule for the entire building.
The company’s superlative stays attributed
PERI called it Europe’s largest 3D-printed building in the same announcement. That wording is presented here as the company’s description, not as an independently verified ranking.
Source credit: PERI 3D Construction, “Heidelberg Wavehouse project announcement”, 2024-01-30
Electric cars / claim check / 2018-09-07
Elon Musk’s “flying car” remark: will the Tesla Roadster actually fly?
Musk discussed a SpaceX package and cold-gas thrusters for the Roadster. This is not a car shown or approved to fly; it is a concept and technical claim described by the company’s CEO.
Where did the claim come from?
At its 2017 unveiling, Tesla presented the Roadster as an electric sports car. In a 2018 interview with Joe Rogan, Elon Musk discussed an optional SpaceX package and cold-gas thrusters that could be added to the car; headlines then described it as capable of briefly flying.
A proposal is not a flight test
The official Roadster event video is a product presentation, not a verifiable flight demonstration using thrusters. It is therefore inaccurate to say “Tesla has built a flying car.” These sources do not establish that the thrusters entered production or met safety and regulatory requirements.
Source credit: Tesla, “Roadster Event”, 2017-11-16 · The Joe Rogan Experience, “Episode #1169: Elon Musk”, 2018-09-07