I have a 78 300D and for around town driving, and even highway driving it's fine. Slow yes, but very easy to hustle with normal traffic.

Having read how slow and dangerous they can be, due to the lack of power I thought people were stretching it.....

I took my 300D to the mountains today... Wow! Wot on some hills and it would start to slow down until it would kick down. I couldn't imagine a 240D!