actually, the picture withdrew posted is the power assisted Speed E Cart. the pic is from TGW.com and their listing for the Speed E Cart. here's the pic from Sunmountain.com:

the issue with these power assisted carts is that anyone who really needs one (i.e. not strong enough to push a cart around) will have a hell of a time just lifting one into and out of the trunk of a car...they weigh a ton (basing on lifting one up in my store). conveniently, Sun Mtn doesn't list the weight on their site. another prohibitive thing about them is the price tag...$700. i would imagine you could fine an older, used actual golf cart for somewhere in that neighborhood.
edit: just saw TGW lists the weight at 31lbs. it honestly feels a lot heavier than that to me...probably because it's so unwieldy, even folded up.