If you are purchasing a gift voucher. You will be able to enter the promo code now or at checkout when entering credit card information. The promotion code button will be located at the top of the booking page.
All discounts using promotion codes or voucher redemption codes will be reflected when you choose your driving experience. If using a 3rd party voucher such as Groupon, you will be required to pay the tax for the voucher at check out if applicable.