run over
轢 centers on a vehicle passing over something with crushing force: running over or trampling under wheels.
轢 combines 車 (vehicle) with 樂, which likely contributes the sound and may suggest the action of wheels passing over something. The exact historical development of 樂 in this context is uncertain.
A vehicle 車 on the left and the complex 樂 on the right can be imagined as a heavy cart rolling over something with a loud, crushing sound.
For レキ, picture a reckless driver running over a pile of wrecked cars: wreck -> レキ, and the vehicle crushes everything.