[Plays with cars]

The brake pedal should not be going down without a bleeder valve being open. This warrants further investigation if that is happening. After bleeding you should have a firm pedal that doesn't go down. If its firm, but going down, then you have a leak somewhere. If the pedal is soft (squishy, not firm) and can be pushed down, then you have air in system (a lot if you are able to move the pedal a substantial amount).