At 100mph!

The Telegraph report that:

"Norwegian man caught having sex with girlfriend while driving at 100mph

A Norwegian man faces a heavy fine and a driving ban after police caught him having sex with his girlfriend while speeding on the motorway, police said on Monday.

...

"It was veering from one side to the other because the woman was sitting on the man's lap while he was driving and doing the act, shall we say," said Tor Stein Hagen, a superintendent with Soendre Buskerund district police.

"He couldn't see much because her back was in the way," he added.

"Why they did it on a highway with such a high risk we don't know.""

How? Why?