Can I buy a hybrid even if I don't use it during the winter?

I am looking at a Toyota Yaris, the car will not be used in the winter months and garaged. Will this affect the life of the lithium batteries if not used for four months each year?

Do plug-in hybrids self-charge while driving?

Does a plug-in hybrid have any self-charging capability?

Is it worth buying a new non-hybrid car?

Is it worth buy a new non hybrid car? With hybrids being more fuel efficient and the government banning new car sales in the near future?

Do any hybrids come with a spare wheel?

I am looking to change car and want to buy a petrol hybrid but would like one that has a spare wheel or space for a space saver. Are there any cars up to 3 years old that are suitable?