Can I deduct a car purchase solely for company business

[DanielV01]

You can choose to either depreciate the car and claim actual expenses or claim the standard mileage rate in the first year.  If you do not use the standard mileage rate now, you must always use actual expenses.  Because of the large allowable deduction for 2018 based on bonus depreciation (which can up to $18,000 per vehicle, or even the full price of the vehicle if over 6,000 lbs), you may wish to use that method.

If it is a car, you won't be able to deduct the entire price at once, but $18,000 plus gas, oil, insurance, maintenance, etc. is still a significant deduction.