paul, the above image with lite cone used a spot, angled down 60 deg. speeder was imported as wavefront with default settings, so it's about 10X6X8 inches., importing in about 0.5 inch below ground.  needs separate material for tyres.

the spot has fx (e.g. light cone, sphere and flare) which means the headlight materials
don't need to glow.  however, the c6pro light cone is not subject to realworld fx
(reflection by a curved surface, refraction by a lens), so it's gonna look fake unless
retouched in photoshop.  use GI settings in general for more realistic renders.