This is a fantastic time for field service representatives. Purchasing cheap gasoline and driving a hybrid car while performing some of the higher pay commercial inspections for the higher quality firms is the way to go. Work part-time or full-time. Job competition is down as the economy had improved and there are more jobs available. The field services industry is becoming less crowded.
When you are self-employed you can take business-related telephone, internet, car expenses, etc. as a business expense.