If a 98 Year old or anybody wanted to drive a Motorcycle they would be required to enroll in a Motorcycle class and learn how to drive one. Then would be required to pass a state test on a Motorcycle.
If this very same 98 Year Old or anybody wanted to drive a RV That is bigger than a greyhound bus and tow a trailer and then a car behind the trailer....they can with only a regular license. Did you know that?
In 1971 J. Standard Baker Quoted " Drivers Towing Trailers Are Four (4) Times As Unsafe As Those In Cars Alone!