What’s the best way to guard an expensive electric bike against theft when parking it near public buildings?

joe friday’s grrl: What’s the best way to guard an expensive electric bike against theft when parking it near public buildings?
My older car was recently totaled, and I’m considering it an opportune time to go ahead and make the switch to a more eco-friendly mode of transportation. I’m planning to purchase an electric bike that is fairly expensive, and something that I’m sure would be just attractive to would-be-thieves as it is to me. I’ve never had a bike like this before, or any bike since I was a kid. What would be the best way to ensure my bike can’t be easily taken when I have to park it? Are there new types of locks or other security devices available these days?

Answers and Views:

Answer by Tahini Raving Weirdo
It may sound too simple, but works:
You could invest in a long chain which you could pull through the spokes and the frame, and lock it with a big padlock.
When you park, wrap the chain around a lamp post.
Everything is woven through everywhere so thoroughly that nobody would have any chance of stealing it, unless they bring one hell of a bolt cutter.

Answer by john j
Joe A good u shaped thick heavy lock is your best deterrent to theft even if you had a $ 2,500 mountain bicycle you owned now for example.