At $6343 [1] for 13.5kwh [2], seems closer to $500/kwh? The federal rebate does help substantially, but most folks should qualify. This # is closer to $400/kwh if you buy with solar, and $300 if you're buying a few instead of just one.

Re: car batteries, the difference between the rear-wheel drive and long range is about 20kwh (60kwh vs 80kwh), for $8K. That's $400/kwh and doesn't even include all the other trim differences like having dual motors instead of single.

So, it looks like reality is closer to $300-$400/kwh, depending. Not close to your ideal of $50/kwh, but still much better than $1000/kwh.

1) https://www.tesla.com/energy/design/overview 2) https://service.tesla.com/docs/Public/Energy/Powerwall/Power...