This Japanese automaker is also credited with building the world's smallest four-cylinder car engine. But this wasn't a normal engine. While it was puny, this four-cylinder was more power-dense ...

As a result, many modern cars are significantly more efficient than before too, leading to reduced emissions and reduced bills at the gas pump. While the news of a small engine powering a large ...

The microcar was listed in the 2010 Guinness World Records as the smallest production car ever made and its 49cc engine allowed a top speed of 38mph (61km/h). Motoring enthusiasts from London and ...