Can I insure multiple cars on a single policy?
Usually, yes, you can. Some insurance providers now offer the option to insure several cars on a single policy with a single premium. Some of them call these 'family' plans and some may refer to them as multi-car policies.
These multi-car policies can be a win-win. Insurance providers use offers to entice you into taking out extra insurance with them. But if they're prepared to give you substantial savings for doing so, it can help reduce your car insurance costs. In the end, the second car you insure with the same insurance provider will typically cost less than it would to insure alone.
Sometimes the discounts increase the more cars you add. Again, though, you'll have to look at each insurance provider's offer to find the option that suits you.