The vehicle is noted on entry papers and must leave the country with you. If you sell the vehicle while here, you must show paperwork proving a legitimate sale and proof that the customs duties and other taxes have been paid. It is illegal for tourists to work in the country. Through Paradise in the Cocori Library. Electrical outlets are also the standard US flat-prong type.
Electricity is available in all but the most remote areas.
Many remote places not serviced by the utility company have local generators. Your license, along with your passport or Tourist Card, are all that you need to drive in the country. Computers are very available and similarly priced as in the States. I would like to be able to get information from a law library in Costa Rica. This access is available only here in Costa Rica.