Slowest Porsche in the world? (well, this world anyway)

How come the Porsche from the late eighties can't overtake a slow moving crapcar from the seventies (or at least that's what the car looks like)?

Who would buy (or steal) a Porsche like that? A sports car that can't move faster than a regular town car or whatever that's called..

In real life, the Porsche would have been able to overtake the other car pretty much immediately and force it to slow down or whatnot. That has got to be the most pathetic chase I have ever seen in an action movie.

I am talking about the Claudia chase scene - the first one, where the protagonists have a 'direct visual' to the antagonist the first time.

And what's with the weird harp music right after that scene? This movie certainly has a lot of oddities. I wonder if they were on drugs when making this, or if they just had a really powerful meditation session right before.