If you are in the fortunate position to do so, any vehicle can be purchased outright in cash. Financing is not a requirement of vehicle purchasing and if you choose to make a cash purchase you will benefit from no additional lending, no interest and no monthly payments. The car is yours from the day you drive away.
Some vehicle manufacturer's offer incentives for customers choosing to finance their vehicle, so, if you are in the position to do so, it may be worth weighing up whether any saving or additional benefit offered with a finance deal is worth considering before committing to a cash purchase.