We got a second car (owned and insured by wife) when our daughters started to learn to drive. It got passed on daughter No1 when she passed so we bought another and that went to daughter No2 when she passed. After that they have paid for their own cars. Even though daughter No1 has been married for over 10 years and lives 200 miles away she insists on me being with her when she buys her cars. (husband doesn't drive)
My wife missed having her own car so bought a Ka to run round in, after getting stuck in snow one year decided she needed an FL1. After 6 years trouble free motoring with the FL1 there was only one car she would look at to replace it. Mine, Saab convertible
Hers, MY08 GS auto