Quote Originally Posted by Beskar View Post
64-bit Windows also allows applications to run with 3gb of Ram whilst 32-bit is capped at 2gigs. Also, the normal applications are improved in an 64-bit environment by 25% performance increase, apparently. There are a great many of reasons to adopt 64-bit.
It's actually capped at 4GB in 32-bit but there was some reason I forgot so you can only use about 3.5GB.

Good point about the cars though.
Other than that, 64bit is the way to go.