$java RunGasStation 1 4 2 2
GasStation: tank sz 1, 4 cars (2 std), 2 pumps; 30 evts, seed 649, mx sleep 10ms
cust. 1: pays for:     1 units
cust. 1: pump started: 1 units, @pump 1
cust. 1: receives gas: 1 units, @pump 1
cust. 2: pays for:     1 units
cust. 1: drives 
cust. 2: pump started: 1 units, @pump 0
cust. 2: receives gas: 1 units, @pump 0
cust. 2: drives 
cust. 1: pays for:     1 units
cust. 1: pump started: 1 units, @pump 0
cust. 1: receives gas: 1 units, @pump 0
cust. 1: drives 
cust. 2: pays for:     1 units
cust. 2: pump started: 1 units, @pump 0
cust. 2: receives gas: 1 units, @pump 0
cust. 2: drives 
cust. 1: pays for:     1 units
cust. 1: pump started: 1 units, @pump 0
cust. 1: receives gas: 1 units, @pump 0
cust. 2: pays for:     1 units
cust. 1: drives 
cust. 2: pump started: 1 units, @pump 0
cust. 2: receives gas: 1 units, @pump 0
cust. 2: drives 
cust. 1: pays for:     1 units
cust. 1: pump started: 1 units, @pump 0
cust. 1: receives gas: 1 units, @pump 0
cust. 1: drives 
cust. 2: pays for:     1 units
cust. 2: pump started: 1 units, @pump 0
GasStation simulation terminated after 30 events


$ java RunGasStation 1 4 4 2
GasStation: tank sz 1, 4 cars (2 std), 4 pumps; 30 evts, seed 285, mx sleep 10ms
cust. 1: pays for:     1 units
cust. 1: pump started: 1 units, @pump 2
cust. 1: receives gas: 1 units, @pump 2
cust. 4: pays for:     1 units
cust. 1: drives 
cust. 3: pays for:     1 units
cust. 4: pump started: 1 units, @pump 3
cust. 3: pump started: 1 units, @pump 0
cust. 4: receives gas: 1 units, @pump 3
cust. 3: receives gas: 1 units, @pump 0
cust. 4: drives 
cust. 1: pays for:     1 units
cust. 2: pays for:     1 units
cust. 2: pump started: 1 units, @pump 0
cust. 3: drives 
cust. 1: pump started: 1 units, @pump 1
cust. 2: receives gas: 1 units, @pump 0
cust. 2: drives 
cust. 1: receives gas: 1 units, @pump 1
cust. 1: drives 
cust. 3: pays for:     1 units
cust. 4: pays for:     1 units
cust. 3: pump started: 1 units, @pump 2
cust. 4: pump started: 1 units, @pump 0
cust. 3: receives gas: 1 units, @pump 2
cust. 3: drives 
cust. 4: receives gas: 1 units, @pump 0
cust. 4: drives 
cust. 2: pays for:     1 units
cust. 1: pays for:     1 units
GasStation simulation terminated after 30 events