im considering getting one these not sure witch one i drive a car so smartdrive probably be better but if i end up getting a van would the smartdrive help power me up the ramp for grassy rocky areas im sure the zx1 is the better of the 2 but not sure how the front tires would react to that terrain either

they both look real interesting and helpful just not sure witch way to go
im t10 para but elbows and shoulders are kinda starting to hurt