Offer them sponsorship opportunities, such as displaying their banners at the event or featuring their products. They can help promote the exhibition to their customer base. Offer incentives: Create special promotions or discounts for early-bird ticket purchases or group bookings. By offering incentives, you can encourage people to attend and bring friends or fellow enthusiasts along. Remember to continuously track your efforts to gauge their effectiveness. Utilize analytics tools to measure website traffic, social media engagement, and ticket sales. Adjust your strategies as needed to ensure maximum promotion and attendance for your classic car exhibition.