dude... I'm talking about a push bike, not a motor bike... <_< I have been talking about saving time a petrol... motor bikes still use petrol... sorry to hear about your dad but I too have had my grandfather, 2 uncles and a couple of family friends all seriously hurt in motor cycle accidents (one of my uncles by a bus) so I know where you are coming from, and would never ride a motorbike on city streets either. But I've been cycling for many years and also had close calls, but the speeds I do on the treadly do not come close to those on a motor bike. Most of my accidents or near misses involved parked cars pulling out on main roads where the driver was not paying attention...