Can I change vehicle deduction method if Im using it for a new business

So, I used the actual cost deduction on vehicle last year for my business. This year, I am starting a new business which will have me on the road alot and I would like to use the standard mileage deduction for this business. Is there any way I can switch this vehicle's deduction method since it is for a new business? I would be willing to no longer claim it for my first business as I'm phasing that out.