Huh? Nothing unusual at all about that. I'm sure others will chime in with even higher numbers, but I sold my last car after I put 200,000 miles on it. It was still working, but did have some miscellaneous issues by that point (no suspension issues though and I did have a gravel driveway for 2/3 of my ownership of the car). Buy a reliable model and you'll find 70,000 to be only middle-age.
(To back this up with some sort of data--a quick search of cars.com for Toyota Camry's (since it's a fairly popular, quite reliable car) shows 4,837 for sale with over 100,000 miles right now. I see pictures of some of those odometers with over 350,000 miles on them. While that's unusual it is FIVE TIMES the 70,000 miles you thought was an incredible distance.).