What's the slowest car you've ever driven and has its lack of speed bothered you?

For me it was obviously my Fiat 126p, but funnily enough when I drive it the low power doesn't bother me at all. The lack of punch was much more annoying in the Opel Astra II Estate 1.6 I drove for a few days this autumn, and that has like 75hp over the little Fiat.