My Predictions for Standard - Premium Cars:
1. Jaguar XFR - completely new to the series, odd that it's Standard
2. Mazda Furai - Highly detailed for a standard car
3. Bugatti Veyron
4. Lamborghini Countach (both versions)
5. Audi R8 LMS
That's all I can think of at the moment.
I am excited about this. I can't wait to see just how many Standard cars are upgraded. And, if some standards are being turned to premiums, the remaining ones should get a graphical update.
Cars I'd love to see premium:
Spyker C8 Laviolette - Exposed Gear linkage, airplane inspired interior...seriously, this car has the best interior ever. I would love to see it in GT5 detail. And, when doing this, they could make it a Mid-engine car...finally.
Jaguar XJ220. Fun car. Would love to see in in Premium detail.
Mopars - These are just fun cars and it would be great to take close up shots of them.
All Muscle cars - YEAH BABY! It'd also make them easier to find.
Trucks/SUVs - I'd love to get behind the wheel of these, and with the premium damage, they could be really fun.