Today I discovered some of the consequences of gravity.

No, not the film.

The fuel light came on my car some time ago. This is bad.

I discovered that if I parked across a slope so that the right side of the car was lower than the left gravity would cause fuel to accumulate on the right hand side of the tank where the float is and so the low fuel light went off. This is good.

I further discovered that when fuel accumulates on the right hand side it does the opposite on the left hand side where the fuel pick up is. This is bad, because then your car doesn’t start.

I finally discovered that gravity can also be used to let your car roll to a position where it is no longer parked right hand side down and it’ll now start. This is good.