Disney Cars Lego birthday invite... help!

[jacobsmom]

My DS8 birthday is coming up in october and he is a huge disney cars fanatic! We have done 2 birthday parties already with this theme and this year he wants to add legos and cars together. (We have the cars megabloks). Since my hubby was just in an accident with a chainsaw, i could really use some creative help to get this off the ground. His birthday party for family will be october 19th (sunday) at 12:30. He'll be turning 9 years old.... he also wants a friends birthday party on the 18th (I think that's saturday). Please help.