That xkcd would be more relevant if not for the ongoing collapse of Tesla sales across Europe despite a growing EV market.

I'd make a slighly different bet than the person I quoted:

Assuming Tesla remains under Musk's control, and absent WW3 or the technological singularity, or EU significantly changing size on that timescale, I expect Tata's sales in EU+EFTA+UK in 2035 will be more than 90% of Tesla's sales in same area in 2035.