After years of driving open cars and motorcycles across the country, I've found heated vests to be the answer to staying warm while cruising in cool weather. I bought my first one from BMW, but most motorcycle shops carry them. Just plug it into 12v and enjoy the warmth. When it gets too hot, turn it down to a comfortable level. Paired with a good wind proof jacket, ear protection, a scarf and gloves you're ready for cold weather driving. I think they are much better than seat heaters as they provide heat to your entire core and neck area. While being from Nor-Cal I wear shorts most of the year. When I need extra warmth for my legs I grab my heated blanket. Works for me !!