BAD PHYSICS
Cellocgw’s argument is the that vehicle with the lesser momentum is more dangerous in a collision, and that lighter vehicle would be safer if heavier. While this can be true, it not necessarily true. Recall definition of momentum: momentum = mass times velocity. Notice that increasing velocity achieves the identical increase in momentum as increasing the mass.
By cellocgw’s argument, any safety improvement that can be had by doubling the weight of the lighter vehicle can also be had by driving twice as fast.
Does that sound right to you?
