Keeping Gill
You can unlock Gil by doing the following:
Step 1 - grow corn.
Step 2 - harvest the corn and tap homer 5 times.
Step 3 - Homer will say some dialogue about wanting to buy a new car, but he needs extra money. Send Homer for Plant Shift (16 hours).
Step 4 - Once Homer has completed the Plant Shift task, have Marge free. More dialogue, send Marge to Teach Art for 6 hours.
Step 5 - Once Marge is done her task, Gil will appear. More dialogue between Homer and Gil.
Step 6 - Build Used Car lot (building - 24 hours, unlocks Gil)
Step 7 - Send Gil to sell cars (24 hours), Send Homer to Browse Used Cars (6 hours)
Step 8 - Place Simpsons Car
Step 1 - grow corn.
Step 2 - harvest the corn and tap homer 5 times.
Step 3 - Homer will say some dialogue about wanting to buy a new car, but he needs extra money. Send Homer for Plant Shift (16 hours).
Step 4 - Once Homer has completed the Plant Shift task, have Marge free. More dialogue, send Marge to Teach Art for 6 hours.
Step 5 - Once Marge is done her task, Gil will appear. More dialogue between Homer and Gil.
Step 6 - Build Used Car lot (building - 24 hours, unlocks Gil)
Step 7 - Send Gil to sell cars (24 hours), Send Homer to Browse Used Cars (6 hours)
Step 8 - Place Simpsons Car
