I am in need of a motor assist trike for two. My son is 16, has autism and is a flight risk so teaching him to ride a bike on his own is not an option. He has no physical limitations but when he was younger and on the tow behind, he would stop peddling so a motor assist bike is the only way we can ride again. It would need a basket between the back wheels so his service dog has a place to ride. I would greatly appreciate help for this problem. Thank you.