The vehicles are driving on the left side of the road, suggesting a country like Australia or New Zealand. The red taxi and the specific style of the concrete noise barriers are very characteristic of Australian motorways. The vegetation and the bright, clear sky also point towards a temperate Australian climate. I suspect this is a tunnel entrance in a major Australian city like Sydney. I am moderately sure of this location.

then: forward

The red taxi is a classic Sydney cab, and the concrete noise barriers are very typical of the Eastern Distributor or similar major arterial roads in Sydney. The tunnel entrance ahead confirms this is a major urban motorway. The lush, green overhanging trees are characteristic of Sydney's coastal climate. I am now quite confident this is in Sydney, Australia.

then: guess