Having Had a Jawa/Velorex outfit they go remarkabley well for what they are !
Myself(pilot) and robG(passenger) did the '94 Dragon Rally on it.
Loaded up with our gear and a slab of beer it held 60mph quite nicely.
Stoping was interesting.....despite all 3 drum brakes on as hard as possible

Pretty good in snow and mud too.
Good cheap intoduction to the art of charioteering !
Jethro