My yellows not exporting correctly??? HELP

[Grant1990]

Edoiting a random photo of my mates car, its quite a bold yellow vinyl, and in Lightroom when its all edited colours look how I want them too etc with a nice strong yellow...

Heres a photo of his car I have took before..

GMD Online by GMDOnline, on Flickr

This wasn't perfect but you can see from this photo how it's getting a different effect...

GMD ONLINE by GMDOnline, on Flickr

This was the photo from last night and how its coming out exported..

136A1974 by GMDOnline, on Flickr

It's kind off lacking the boost...

Help please!

I've changed around tone curves, hue, saturation etc etc, exporting in SRGB, tried exporting in tiff, I changed colour profile from Adobe Standard to Canon etc and it threw the photo off colour wise.

 

[sk66]

The lights in the last image are probably fluorescents with a magenta cast to them. Fixing that will mess up the yellow.

 

[Chappers]

If you look at the second picture the tarmac is very magenta, which makes me think the overall image has a magenta bias to it thus giving the unsatisfactory result. As Steven pointed out the third picture may be effected by the lighting used. It looks as though there were at least two light sources.