Stopped here for lunch while driving from Windsor to Toronto. Including the detour from the 401 this was still faster than stopping at an enRoute and the total for two people for lunch including tax and tip was $15.
The service is friendly if a bit rushed. Can't really blame them, the are only four items on the menu. Once you order the food comes out outrageously quickly. The only comparable experience is actually having prepared food for yourself and only needing to carry it to the table.
Hot water and tea are self serve at the back. If you go back after you've ordered the food might make it to your table first. Cold drinks are in a cooler and must be ordered.
The wontons are very tasty. I had the wonton noodle soup ($4.50) and vegetables (Chinese broccoli with oyster sauce, $2.50) he had the wonton lomein ($5.00), which comes with soup. There's a great hot sauce on the table, but it is quite spicy. Great in the soup and on sale for $7/jar at the cash.
You'll have to go up to pay. This is a great find for us as we make this drive often. Give it a try!