AUSTIN, Texas -- In the front seat of a Honda Civic, the clock is ticking.
Having paid for a parking spot with a credit card linked to his car, a driver returns to the vehicle and finds a digital readout on the navigation screen counting toward a two-hour time limit. He taps the Visa Checkout button to stop the clock and pay, then drives off without handing cash to a cashier or slipping a card into a slot.
For automakers such as Honda, which are determined to give owners a smartphone-style experience in their cars, this is a big part of the promise of the modern connected car. But turning a vehicle into a mobile payment device is still an elusive goal.