If my car's gas tank was hit, will that be considered a total loss?

I’m taking an automotive class at school this year and we have to do a report on the history of a car make of our choice. I’ve chosen to learn about Jaguar, but there’s a lot I don’t know. My question is, where did the Jaguar car come from?

My husband and I are planning on getting our first home together, but we’ve just decided on becoming owner-builders—we have the expertise and tools, so we figured, why not! Does an owner-builder have to purchase home warranty insurance?

Will my car insurance get more expensive if I go back to school? I'm over 25, but I'm going back to school in August.