Not a bad idea with the cardboard, although my garage floor has a few leak spots that are too late to absorb. Wood shavings do a great job if the leak is fresh. Rub them around, sweep them up, floor is almost as good as new.

1950 3100w/63K
Farm Truck: Fame-up restoration / modification
Follow the restoration story in his Project Journal
1950 Styleline Deluxe Coupe w/93K