If oil and gas would not exist, then liquid fuel would be produced from coal. With the latest processes the cost of production is like 80 dollars per barrel, but with processes that Germans developed during WWII it was probably like twice of that in modern money.

In alternative universe that would be cheaper due to massive scale, but the era of very cheap liquid fuel would never happen. So electrical cars on big scale will happen much earlier. And given that coal is much more evenly distributed on Earth, one can speculate that there would be much less reasons for conflicts.