A cyclist got a puncture that he couldn't repair, so he decided to hitch-hike a lift home. A man driving a Ferrari pulled up and offered to tow the cyclist but wouldn't let him put the dirty bike in his car. Since the cyclist was tired and there were no other cars around, he agreed to being towed.
The Ferrari driver tied the bike to his car and then said to the cyclist; "OK, we're ready. If I drive too fast, ring the bell and I'll slow down."
He then set off but at the first set of traffic lights, a Porsche pulled up next to him.The Ferrari Driver instantly forgot about the cyclist tied to his car and started to race the Porsche. As they raced down the road, they went through a speed trap. The policeman with the speed gun radioed the officers further down the road and said; "You've got a Ferrari and a Porsche coming your way at over 100mph."
"100mph?! Isn't that the fastest speed ever recorded on this road?" the officers replied.
"Yeah" said the cop with the speed gun, "But get this. There's a cyclist behind them ringing his bell to go past."