comments:
For RWD electric cars, they behave like an ICE vehicle with an open differential. Depending on the design of an electric AWD system, you may also have motors that behave like an open differential as well. First, cardboard isn't a "plank". You need something more structural. I have something similar to this that I've used before on my ICE vehicles and it works very well. https://a.co/d/0b39auLZ Assuming an edrive and not an xDrive, you'd put this under the wheel that's spinning, but it helps to have it under both drive wheels. If it were an xDrive, you'd put them under the wheels that were spinning on either axle. For vehicles that have individual motors per wheel, I'm not sure if these would work as well, but they couldn't hurt. If this isn't helping for whatever reason (I would be surprised), you can also buy what's called a "come-along" and probably 2 tow straps (with hooks) from harbor freight for cheap, and put yourself out. Get a tree saver strap from Amazon as well for the tree you'd use as leverage. Use the stock tow hook that's in the trunk (rear left, theres a lid in the little box that holds stuff - look it up online if you need a picture of it). There's really no reason to call a tow truck for this, if only for just the time it takes for them to get there (assuming it's also a cheap tow thru insurance and you're not paying out of pocket for it - then it just makes no sense to call a truck when you can have a solution for around 100 bucks).