Ural on Buggy Clears Double Slab and 4 High

4 High: Slowly crawl the Ural's front wheel onto the buggy. Easy and consistent.

Double Slab: Back up 20+ meters and ramp the Ural onto the first slab. A bit inconsistent and requires some practice. Vault from the buggy onto the Ural. Easier to start from the first slab if circumstances allow.

You are aligning one of the Ural's wheels with the center of the buggy.

Edit: Now that I've posted, I realize you should just jump from the buggy onto the first slab, then onto the Ural.