i got this 1970 motobecane moby from an old guy in the buy and sell for 125 and its in immac shape is it normal for those thong to go 50 mph easily, it is in miles because i was riding it beside my dad in the car and i was going the same speed in miles an hour as he was is that fast for a ped, i mean this thing can go on the free way if i were to go max speed.