Replying to auto insurance question!

ok heres my question, can one person be a primary driver on 2 vehicles, here is my family, i live with my mom who has her g, shes had for like 30 yers perfect recodrd, my bro who will have his g ina month, perfect record, and myself who will have g2, i plan on getting a car (vw golf probably) used but you see i dont want to be primary insured, too expensive so is htis legal or not

van: primary driver- mom, secondary driver - brother, third - myself
car: primary driver - mom, secondary driver - me


is that legitimate?
don't do sleep and get 8 hours of drugs