I'm in with futuristic vehicles too.
I've been thinking and, as in the future there would be no frontiers and countries will join forces for economical survival, I thought of dividing the world in 6 parts, as economical groups, maybe an European, North-American, South-American, Far East (Japan, China, Mongolia, Korea, Vietnam, etc....), Arabian and African. Maybe its more ethnical thn economical...
We could create the armies of those groups, each one would define its part by the way it's designed. So we could have fluent line designed european vehicles with wavy and subtle forms all the way to the rusty, rude, rough looking african vehicles (those could fit in what Klobsters mentioned about Post-Apocalypse vehicles)
What do you think??? Let's create an army!!!