Driving around local streets, brake pedal began sinking to the floor of the car. there was a slight braking when it reached the floor so i was able to slow and stop the car. thinking the fluid was low, i drove slowly home and added brake fluid. i pumped the brake pedal a few times but it never came back to feel like solid braking again. outside the car i noticed brake fluid leaking out from above the gas tank onto the driveway. my brake lines had rusted through and i now have to have them fixed. funny, i have a 1948 plymouth sitting in my back yard, and the original brake lines are still intact! *tr