You're not sure exactly what's going on with your car... You just know that something is not right or that you're hearing a weird sound. You need a car inspection but don't want to pay for a tow or drive a potentially dangerous vehicle to the shop.
All a technician needs in order to perform this service at your home is their complete set of tools, diagnostic scanners, and his expertise. This service usually takes maximum 1 hour to complete. It involves the technician assessing the surroundings of the vehicle, test driving the vehicle to get a better understanding, and testing the components of the vehicle in order to identify the root cause of the issue.
Advantage: Complete transparency, ability to ask the mechanic any questions you'd like, a professional and accurate assessment, and the ability to avoid a tow to the repair shop.