He frowns, like he's puzzled. Like maybe he didn't see what he thought he saw.

Then he slings his arm 'round the back of her seat, turns, and reverses back at speed.

She'll get it when they stop. He did see what he thought he saw. The reason some cars have extra space around them is because they're broken. There are bits hanging off.

He kills the engine on the Cortina, and gets out. And just looks at the remains of his Quattro.