Thank Liz, i think i'll have a good search on google and see what i can find..its looks pretty good, i guess i'd be a bit worried that it might be harder to get DS out of the carseat in a hurry if there was an accident.. i didn't know you could buy tray for the backs of the front seats whereabouts would i find them?

I've been on a few trips with Ds (one 7hour trip which was a NIGHTMARE!) his grandma and grandpa live 4 hours away so we've done that trip a few times and he definitely needs lots of toys and activities to entertain him. He definitlely wouldn't sleep unless he was absolutelty exhausted..i've been blessed with very energetic boys so something like this would definitely make life easier.
I just emailed the seller and asked them what its made out of as that would make a big difference safety wise...if its just firm foam/material then i think that's ok...will let you know what they say