of carparks

I was driving into a carpark at a shopping center last week. I followed behind a car into the carpark. However, it stopped at the ticketing machine for some time. The driver did not insert the cashcard into the ticket machine but just kept waiting at the gantry. After 1 minute or so, 3 cars were already waiting behind me.

I approached the car and knocked on the door. The driver wound down the window.
Lancerlord: "Hi, is anything wrong?"
Driver: "Wrong? What's wrong?"
Lancerlord: "You not going into the carpark?"
Driver: "But the gantry don't want to go up. How to go in?"
Lancerlord: "Did you put the cashcard into the machine?"
Driver: "Huh? This carpark is not ERP one ah!"

Then the driver took the cashcard from his IU and inserted it into the ticketing machine.

Some carparks are ERP-enabled. Some are not. Some use cashcards. Others don't. Can be confusing to some drivers.