Hello -
My wife got me this for XMas, first published in July 2001 :
It uses a mixture of cartoony images mixed with real data from real cars :
Here's an example that shows the benefit of wheel covers :
And here's one that shows the benefit of (partial?!?) wheel skirts (*with* wheel covers?!?!?) :
164 pages of aero-fun-madness!!!!
CarloSW2