Wheels that strap right to your kayak for transporting over-land come in a variety of styles. Some take apart and fit right in your hatch. As far as driving to the launch site, the size of your kayak is not relevant if you have the right roof rack system. Don't make the mistake of choosing a kayak easy to lift onto your car if your safety and enjoyment will be compromised. There are roof rack systems that assist you in lifting heavier models.
Roof racks can be very simple and inexpensive, or very high quality.
Make sure that the rack is secure, and that the kayak tied to it is also secure. Some roof racks are made only to fit certain cars. Other racks will fit all cars. Make sure the rack is the right kind for your car, by researching them carefully. Regardless of what system you choose, good quality tie-down straps are essential.