Well it wasnt a Packard.but a Franklin. My 1930 147 sedan ,a 7 pass long wheelbase car ,with a stock 100 hp air-cooled 6 will run 80 mph without hurting it. Dont get wrong,everthing is VERY BUSY under the hood,but Ive done it. The 1930-32 Franklins are in my opinion the greatest driving common mans classic on the road.Lots of power,speed, 4 wheel juice brakes,and light steering. No worries of over heating,belts,hoses or radiator problems....A franklin setup correctly doesnt care what the temperature is outside,hot or cold.