First, I assume that the business (not you) will be purchasing the vehicle. If the vehicle is titled in your name, then you are limited to the per-mile deduction (typical if less than100% business use), or actual expenses if 100% business use.
It also matters what kind of business (S-Corp? C-Corp? Multi-member LLC? Single Member LLC? Sole proprietorship?) for determining precisely "how" you report it. Just keep in mind that regardless of the depreciation method used, when you dispose of that vehicle in the future, all depreciation taken is required by law to be recaptured and taxed in the year of sale or other disposition.
So if you take SEC 179 for 2020 (assuming you have the taxable business income to deduct it from) and then you sell or otherwise dispose of it in 2022, recapturing all that depreciation in 2022 will have a high probability of bumping you into the next higher tax bracket.
