Reference
City | Transit Buses have average lengths of 39’2” (11.95 m), widths of 8’4” (2.55 m), heights of 9’10” (2.99 m)
Most popular “car” in US—Ford F-150
Overall length, 19.3’ ; Cab height, 6.45’ ; Width - Excluding mirrors, 6.66’
Lane widths in US vary, but should be between 9’ and 12’ (inclusive range for both local streets and highways)
Conclusion: Busses are wider than cars, both can fit within driving lanes
That thumbnail looks like a really well-modded FallOut 4.