I have a 1989 Cadillac seville sls...replaced struts and shocks a few years back...Monroe Air shocks on rear.
I need to haul some supply from Lowes..some to be concrete mix..
HOW MUCH WEIGHT DO YA THINK I COULD HAUL SAFELY ABOUT 60 MILES ?

 

The passenger car has a payload capacity of 600-700 lbs. The payload includes passengers and luggage stowed in the cargo compartment. Modern roof racks must be certified and registered when fitted to the vehicle. To know the exact weight of people trying to get into my car, I purchased a weight scale. Unlike conventional scales, this one is smart, interactive, and helps you reach your fitness goals - like a health expert in your hand. I watch my weight, and I eat a proper diet. I want other people to follow my example.