Imagine how the freeways used to sound like in 1972

I remember what they smelled like back in the early 70's...Pee-You!!! Remember stage 1 smog alerts so we couldnt go outside during recess in grade school...The only cars I hear nowadays are Hondas and Subaru WRx's with 4" exhaust tips and Jake brake Diesels. And bikers: That no baffle 18" V-twin exhaust is incredibly annoying when you are not passing me. I was stuck right behind one for 15 miles, just cruising playing with the throttle and I almost pulled over to let him get out of earshot. He finally found an open and I could hear him opening it up for as far as I could see him, like 1/4 mile...Im getting old...