A neighbour who was a car salesman was late for work one morning, and took off in a hurry. I've never seen a car on the street move so fast! Top versions did the quarter in 14.4 secs. And that's with the 4.3 litre 302hp six.
The car in the ad would be an early E38, so not quite as fast, say only high fourteens.
Interestingly, the ad makes you think it's a hardtop, but it has flip-out side windows like a Duster. False advertising? :)