It will have an impact, moreover for BMW and BENZ electrical line up to come close to Tesla in quality, range, reliability might take another decade.
> Oil and gas industry
Singapore oil tax is not same as electricity. Moreover electrical charging station is not a competitive advantage any decent company do it, indeed blueSG and SP Utilities have more charging station than Shell in Singapore. EV and Tesla will affect this industry directly.
> Maintenance
In general, AEVs require less maintenance than conventional vehicles because there are usually fewer fluids (like oil and transmission fluid) to change and far fewer moving parts.[1]
[1] https://www.energy.gov/eere/electricvehicles/electric-car-sa...