If you asked ten car designers to explain this process of sketching you would get five different approaches. Some designers start with both wheels, some start with the front wheel and then start to sketch the front of the car and put the second wheel in later. You can approach it however you choose but I always start with both wheels because one of the challenges of drawing a car is defining the wheelbase and the correct proportions. You have to have an idea of where the rear wheel is supposed to be. With this method, I sometimes continue to sketch and realise the rear wheel is in the wrong position so I erase it and start again. When you draw your wheels it is up to you whether you start with two simple circles or add a little more: in this case I’ve started to think about the idea of a five-spoke wheel.