The Vw Typ 2 is a Barn Find so can’t be bought (and it is worth 50,000 cr anyway).
I’m at 235 cars in FM5*** so I have tonight to get to 300. I tried not to duplicate, but I’ve already purchased at least 1 of every car under $200k and I don’t think I’ll be able to buy another 65 at $200k+ each. I just wish it didn’t take so long to cycle through the whole purchase process. I was able to purchase 200 cars in FM3 in a few hours (to get to 300+). Oh well…you do what you gotta do. 
***Just realized this should have probably gone in the FM5 forum.
I am at 200 cars in FH2…spent last night buying 70 cars. I think that’s were I’ll stay. It was worth it for the 900k extra CR, but I don’t know it I can get both FM5 and FH2 up before I pass out tonight.
I got up from 122-148 today so I’m doing ok, can I get another 152 cars in 8 days…shouldn’t be too hard, but it’s a long old chore, really hope I can do it.
Congratulations to all those who have already got 300+ especially if you have done it in the time since finding out about the reward in FM6 and to all those still fighting through I hope you manage it before the launch of FM6
Finally got mine in Forza 5, Horizon, Horizon 2 Now working my way through on Forza4
Then hopefully Forza 3 will be my last
Both 3 and 4 I have 200+ so far.
Not sure will get them tho as I’m chasing tier 8 with Forza 5
Best of luck with your quest
I bought 230 cars in FM5 in 2 days, finished up yesterday and had to buy 20 cars in Horizon 2, so yes, you can do it! hahahaha
Only 120 left to go, it’s not easy and is taking so much time but I’m determined to get it done!!
I’m at 20,000,000 what I did was just kept buying the abarth which for 5M you had you could of bought like 500 of those.
Ive got a bunch of legit multi cars I want in the 3,000-28,000 credit range and now I’m just tirelessly bulking out the 5-7k credit cars to get the last 100 - I only need 51 cars now by Friday