Alternative transportation models — including a solar-powered monorail along the Rose F. Kennedy Greenway — deserve consideration now that the Government Center Garage redevelopment is set to give rise to six new buildings as part of a $1.5 billion redevelopment project.

The project’s promise of 2.3 million square feet of badly needed office, residential and hotel space brings about new transportation complications: more visitors, fewer places to park and added commuter congestion.

The nearest T station is Haymarket, and that’s already at capacity during rush hour. Meanwhile, the largest local public market in the nation has breathed new life into the long-idle space directly above Haymarket station, drawing tourists and commuters alike. The charm borders on European. Until you realize it’s time to hop on the Orange Line.

The garage redevelopment project includes a new public plaza and pedestrian promenade that would serve as a gateway and connector between the Bulfinch Triangle (Canal Street), the Greenway and the emerging market district. That’s the perfect midpoint for a new transportation line that would solve the parallel problem of disconnection between North Station and South Station.

But let’s not delude ourselves that this problem will be solved by the MBTA. The Bay State’s public transportation system can barely fulfill a promise to extend the Green Line, let alone build or operate the North-South underground rail link that former Govs. Michael Dukakis and William Weld have suggested.

Minnesota-based JPods has proposed bringing their solar-powered gondola pods to Boston and Somerville, an idea that caught the attention of former city councilor Steve Murphy, who liked them for the Greenway. The idea went largely unnoticed at the time.

For his part, Mayor Martin J. Walsh seems to understand the need for alternative public transportation options as Boston’s skyline expands.

“The mayor’s office is always open to creative options to increase transportation options in Boston,” said spokeswoman Bonnie McGilpin.

JPods are among a category of vehicle called personal rapid transit, a network of small, solar-powered automated vehicles that operate on specially built guideways. They’ve been tested — in different forms — everywhere from New Zealand to Abu Dhabi and even installed in Heathrow Airport to ferry travelers from Terminal 5 to the long-term car park. The expansion of these projects always seems to end with the conclusion that they don’t move a high enough volume of people for the considerable cost. It’s just the type of problem Boston’s innovators could take on.

Any new structure that runs along the Greenway should be elegant and light. One would imagine that if the roadway once held an elevated highway, some supporting structure exists for a light rail. Luckily we have a decade before the Government Center Garage project starts to really take shape, so there’s no harm in exploring new transportation options for the area starting now.