Of course, the mass ratio is also 1.4. There are two extremes of collisions, elastic and inelastic. Elastic collisions are best seen between subatomic particles, but a billiard table comes pretty close. Kinetic energy is conserved. Basically, things bounce well, they don't get damaged.
Inelastic collisions are what cars and occupants do.
Kinetic energy crumples metal, shatters glass, and breaks bodies. Colliding billiard balls at 40 MPH probably breaks them too. A Saturn has 5 MPH bumpers. To work at 35 MPH, they'd have to absorb 50 times the energy and still limit deceleration to a safe level. The figure shows the truck well into its turn and the Saturn just beginning an evasive manueuver that's doomed to fail.