The theme of the series was historical transportation vehicles used in the United States since its independence.

Neither he nor anyone else seemed to consider the possibility that the newer, faster transportation vehicles of the future would get in each other's way.

He devoted his life to developing more efficient transportation vehicles that could "Do more with less".

A Minivan, the stereotypical transportation vehicle of choice for a suburban family.

Ukraine produces nearly all types of transportation vehicles and spacecraft.

There is currently an overflow of public transportation vehicles on the roads.

Who could tell what intelligent machines thought they needed in their transportation vehicles?

Switching to natural gas in large transportation vehicles can lower (but not eliminate) emissions dramatically.

Today, the most practical application of objects on wheels are cars, trains, and other human transportation vehicles.

You might even be able to replace all the transportation vehicles on Earth with ones that use electrical or hydrogen fuels.