In my world, aka Melissa Land, we would all drive cars like this:
That way, if we bump into each other, no one will get hurt. We'll all get great gas mileage too.
In conjunction with the Wee Little Car Ordinance, we would also implement my Road Infrastructure Vision:
*One set of roads for us in our Wee Little Cars, and another road system for trucks, motorhomes and buses. Then the Wee Little Cars wouldn't have to worry about getting smooshed by the Big Old Trucks.
*Around densely populated areas, we might have a Double Decker Road System, with the Big Old Trucks on the bottom and the Wee Little Cars on the upper deck. (So the Big Old Trucks can't fall on us!)
As you can see, I have given this some thought!
In Melissa Land, everyone would also have a garden. But that's another phase of my plan, and I'd like to get this road system thing nailed down first.
By the way, that is a 1969 Fiat that we saw in the parking lot at Panera today.