6. Gas Tracker for a taxi company Implement a system that is able to keep track of gas usage for automobiles that are owned by a taxi company. The system should be able to track the gas usage for multiple cars. A user should be able to enter gas receipt information into the system. The receipt should contain the date of fueling, the cost, the amount of gas (in Litres) purchased, the distance traveled since last fill up, and the car for which the gas was purchased. Based on this, have the system produce a variety of statistics on gas usage including fuel economy (L/100km), average driving distance per unit of time (day/week/month), average amount spent on gas, variations in gas price over time and so on. Also, allow viewing of averages over all vehicles in the system (or subsets) 6. Gas Tracker for a taxi company Implement a system that is able to keep track of gas usage for automobiles that are owned by a taxi company. The system should be able to track the gas usage for multiple cars. A user should be able to enter gas receipt information into the system. The receipt should contain the date of fueling, the cost, the amount of gas (in Litres) purchased, the distance traveled since last fill up, and the car for which the gas was purchased. Based on this, have the system produce a variety of statistics on gas usage including fuel economy (L/100km), average driving distance per unit of time (day/week/month), average amount spent on gas, variations in gas price over time and so on. Also, allow viewing of averages over all vehicles in the system (or subsets)