ive been to the blacktown one with my 35mm drop... and its been fine... the way it works though is theres like a big bump at the front of each parking spot, and you park your car either on or off the bump, depending on the positioning of your windshield etc so you can see better... i usually just park way before the bump, but you might have issues if you drive over the bump with a low ***** car and a kit on.. im not sure.. drive ins are awesome though... you take all your pillows and blankets and doonas (or duvet's if you're pete), fold the front seats right forward, remove the headrests, and recline the back seats... pure comfort. i just thought about it... im going to have to get FM radio working before we go there... otherwise ill get no sound :P