I'll wait and save my money for a chair with legs that can walk up stairs or scramble over a boulder field.
Well as long as you're thinking along those lines, might as well go high tech destroyer suits complete with rocket launcher, dual large caliber machine guns with laser targeting, and air conditioning. 
Nah, it's got to be a crappy little thing that can't move very fast and doesn't have any kind of enclosed cabin. Old people could ride a tank to the beach, but it wouldn't be the same as riding a tracked wheelchair.
