Car collision impact with object

I’m making a racing game and I have objects that I have to avoid but if they hit my car I want the car to stop or be pushed back a little. My problem that i’m having is that when my car does get hit its pretty much gets flipped over ever time.

This is what it looks like

These are my car settings

These are my boulder (object) settings

what settings would u suggest that I tweek so that the car is strong than the boulder?

The boulders have no Rigidbody therefore can’t move when something collides. They may as well weigh 1 billion tons each. The only reaction from the collision is the car bouncing away no matter what it weighs. 2 tons is fairly heavy go-cart! Add Rigidbody to the boulders with similar/less mass than the cart so they can absorb some of the impact. Some drag on the boulders may help stop them bouncing off as much.