For Laska it would be better to keep the car. It is much better to travel with a car, it makes life much easier. Especially because there are places that it is difficult to reach without a car and you have to go on a tour. And for the purposes of your blog is more convenient to have a car. You should travel to southern Mexico is very beautiful. Especially Oaxaca and Chiapas. Of course, first you should go to Mexico City, there are many cultural activities to do and many of them are free. At the end of July is the Guelaguetza in Oaxaca, you should go there. Good luck with the laundry :D