Like a Cabify or Ubber..but different and simple.. Service: a specific type of service using car + driver.
The person that requires this specific service need to identify driver available in his/her region. Do not need control movements like in Ubber. Only see where the drive+car is based. Also need see if driver is available and call the driver by APP.
The services could be booked in the driver "agenda".. Remembering notices shall be sent.
Value of travel shall be calculated according variations on the service (people movement), distance, volume of trafic in the day/night, etc...so some algorithm shall be developed.
Developer need know Google API, Java, etc...