Piece of black tarmac walks into a bar, buys a drink and drinks it and leaves.
Five minutes later a piece of green tarmac storms into the bar and asks the bartender,"Have you seen any other tarmac around here?"
"Yeah" says the barman, "Piece was in here 5 minutes ago then left"
The green piece of tarmac storms out.
10 minutes later the black piece of tarmac staggers into the bar. He's been beaten up.
"Did you tell a green piece of tarmac I was around here?" He asks the barman
"Yeah, why not?"
"Couldn't you see?" exclaims the black tarmac,"He's a cycle path!"
"There's no wreckage that's too broken to rebuild"