Here's why:
* Energy density limitations: Compressed air has a lower energy density than gasoline or batteries, meaning you need a large tank to store enough energy for a practical driving range.
* Refueling issues: Refueling with compressed air takes significantly longer than filling a gasoline tank, and finding air stations is much less convenient.
* Performance limitations: Air-powered engines generally have lower power output and acceleration compared to conventional engines.
However, there have been some advancements in the field of compressed air technology:
* Hybrid air cars: Some companies have developed hybrid vehicles that use compressed air as an auxiliary power source, supplementing a traditional engine or battery.
* Compressed air for braking: Some vehicles use compressed air to assist with braking, improving efficiency and reducing wear on brake pads.
While a fully air-powered car is not currently viable, compressed air technology continues to evolve. It's possible that further advancements could lead to more practical applications in the future.