1. **State the problem:** There are vans, lorries, and motorbikes in the ratio 2 : 5 : 9. 2. We know that the number of vans corresponds to 2 parts in the ratio. 3. Given there are 8 vans, find the value of one part by dividing 8 by 2: $$\text{one part} = \frac{8}{2} = 4$$ 4. Calculate the total number of parts by adding the ratio numbers: $$2 + 5 + 9 = 16$$ 5. Find the total number of vehicles by multiplying the total parts by the value of one part: $$16 \times 4 = 64$$ 6. **Final answer:** There are 64 vehicles in total in the car park.