False motion blur

[Furnace]

Hi,
I'm doing a 360 of a car in a tunnel, the camera sweeps round the car, and I've set up VRay motion blur for the wheels, but my problem comes with the tunnel.
As the car isn't actually moving so the tunnel is static I won't get blur on the tunnel walls and lights.

I don't think I've got time now to build a longer tunnel and animate the car and camera moving down it so I was guessing a post fix.

I've rendered the camera path in the tunnel without the car and added a pixel motion blur in After Effects, it looks ok but not 100% realistic. Also blurring the maps won't work because of the scene lights and details.

Does anyone have a better solution?

Many thanks,
Elliot

[Deflaminis]

It's a bit hard to understand without some screenshots. If the wheels are blurring I'm guessing that means the car is meant to look in motion, so not only do you need to blur the background but you'd need moving reflections on the windows or other parts of the car to sell it. The best lighter I've ever met used simple animated cards for reflections on windows. The cards themselves were animated while the car stood still like in your case but the shots were constructed so that the camera never moved too far to reveal the illusion. With a 360 degree turn that complicates things.

Would it be impossible to just clone what you have a few times and animate the tunnel moving rather than the car? With blur would anyone notice if it wasn't perfect? If there is some base geometry for the tunnel like railings or stonework then rendering a velocity pass and doing a more complex blur in post might be the only easy answer but even then it would have to be moving. Only plugin I know for the is ReelSmart Motion blur, works well with Vray but takes a bit of time to get the max speed.

Can you take advantage of depth of field? Might also help to hide the process.