The drive up from New Bedford to Cambridge this afternoon was a real summer drive. The car was already hot from the sun. Driving with the windows rolled down didn’t cool it down much. Even though it wasn’t that hot today — only up in the eighties — I thought I could feel my head getting hot from the sun beating on the roof of the car. My shirt was damp with perspiration. I’m not used to the heat yet, and I swear I got a headache from the heat. But in a month or less, a day like today will seem cool and comfortable.