Range in EVs is impacted very little by weight

Exactly. I was very surprised to find out a fully loaded 40 ton electric truck only uses ~100kw / 100km ( https://www.youtube.com/@electrictrucker ) when my 2 ton Volvo averages 20-22kw/100km on road trips.

Superfastmatt did a test recently where he proved to himself that the front area of the vehicle and trailer is the dominant factor on mileage, not the weight towed or friction.

For a guy trying to drive 300 mph though maybe he should have been able to do that with math instead of sketchy road tests.

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Newton’s first law helps out a lot here.

kWh not kW.