Se that she uses her brakes to slow down often and come to a full stop occasionally. Most mothers can run indefinately on coffee, left overs and salads, but occasionally needs a dinner or two at a nice resturant to add to her efficiency. Mothers, when their bodies are properly maintained, need regular exercise and should be provided for as necessary such as a change in hairdo or makeup in the spring and fall. If you notice the chassis begging to sag, immediately start a program of walking, jogging, swimming, or bike riding. These are most effective when done with fathers.
Compliments are both the cheapest and most effective way to keep a mother purring contentedly.