Today you can buy literally any car on the market and have way more acceleration, power and top speed than you need day-to-day. Take a really cheap car like the crappy $16k Nissan Versa which has 122hp in the base model. Compare to a 1970's Porsche 911 (125hp). They both weigh about the same too if that's what your thinking - modern materials are light!
Unless you're towing it's not practical to care about car performance anymore. You have a car? You likely have more power to weight than a sports car from 50 years ago.