Unveiled in 2015 then confirmed and denied too many times by Mazda’s upper echelons as the RX-9 rotary sports car, the RX-Vision is a bite-the-back-of-your-hand beautiful concept. Four years since it ...

The valves, which can move from fully-open to fully-closed in as little as 30 msec, reportedly can fit in a fraction of the package space ordinarily needed for comparably-rated valves using a linear ...

The 1970s were full of strange automotive experiments, but few were as unlikely as a compact Japanese pickup powered by a ...

The rotary engine is officially dead. For now. Bloomberg reports that Mazda built the last of its unique powerplants last Friday, ending a 45-year run. The automaker announced last year that it would ...

The new and improved always prevails over the old and stale, doesn’t it? Surely the ancient contraption called an internal combustion reciprocating piston engine – a design that is approaching its 150 ...

September 15, 2004There is no other motor as efficient as the Di Pietro Rotary Air Engine. It is 100% more efficient than any other air powered engine built to date and its high torque makes it the ...

Bruno started at Top Speed in 2022 and now serves as Senior Editor for ICE while also training writers across CarBuzz, HotCars, and TopSpeed. A car and motorcycle enthusiast, he enjoys writing about ...

Back in the 1970s, American Motors was known for building oddballs. These were the cars that didn't look or drive like anything else on the road. But buried beneath the company's quirky reputation was ...

Here is an interesting design concept from designer Mark Miller, the Touchscreen Rotary Phone. The Touchscreen Rotary Phone merges an old design with new technology to bring us this stunning concept ...

Operating companies continually seek new technologies to drill laterals and extended reach wells further, more efficiently and at lower cost. Even with higher oil and gas prices, the challenge to ...