4 ms·

Would this still have the same impact it did in the 70's? Cars today are much more aerodynamic than they were 50 years ago. That almost certainly changes the

• cjohnson318 5y ago
  Yes, I think so. Cars in the seventies also tended to be smaller, meaning there was a smaller cross-sectional area on the vehicle. I think we have more efficient engines now, but I think the differences between larger more aerodynamic vehicles versus smaller less aerodynamic vehicles is negligible. If someone has numbers, then I'm happy to change my mind.