Fastest Way to London

There was a tourist in Dublin.

He was trying to get to London but was running a little short on time. He saw an elderly man sitting on a bench and thought the man might know a quicker way to get there. He approached the man and asked, "Sir, what is the fastest way to London?" "Are you walking, traveling by push bike, or motor vehicle?" the elderly man asked. "Well, car. I'll be traveling by car," the tourist replied curiously. "Well, that's the fastest way I know."