Because maturity on the topic, and the logic of "don't tell Polyphony Digital, or Sony," is going to let you keep your beloved "realistic" hybrids. There is a realistic hybrid. It's called a Prius, and it's horrendous.
As I posted a few days before...
http://[domain blocked due to malware]/instances/400x/35950397.jpg
Nor do people avoid drawing attention to the new hybrids. If Sony never finds out, you can have your hybrids for ever and ever. As I'm actually getting tired of hearing about them, (as is AudiMan2011,) I might ask that you show a bit of maturity, and, if you don't want to see the new hybrids patched, keep them under the covers.
Al Capone never went on TV, advertising "I've got illegal, imported drinks for your speakeasies!" Why would you guys advertise on the semi-official GT5 headquarters, about having cars that weren't meant to be in the released versions/builds of the game?
You don't want to lose them? Stop bringing attention to them. Stop creating arguments, and go and drift your RWD Integras.