Huh, how does having options of ICE or EV cars mean high oil prices won't mean people try to use less oil?

If gas prices go up, expensive public EV chargers will be more appealing. I hope you get better infrastructure re: charging soon; here in California (not known for low energy prices nor for infrastructure-building capacity) most fast chargers are between US$0.50 and US$0.70 (£0.37-£0.52) per kWh, so it is definitely possible. (You also need non-fossil-based electricity generation to truly decouple from oil/gas prices.)

I share your worries about industry, though — although trucks, earth-movers, etc could theoretically run on batteries or hydrogen or something, industrial processes using petroleum and natural gas may be around for a lot longer.