Park Driving Tours?

This summer has been the best for me by far for riding coasters.
This question is for people with a few parks fairly close to each other.
What are the best road trips for parks? I mean parks within a 2 hour driving distance of each other? Example: Cedar Point and SFO are about an hour and a half from each other.
I think this will help many of us plan better trips hitting smaller parks we may have missed otherwise.
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Parks hit for 2000!
PKD,BGW,DP,HP,PKI,HW,SFKK,SFA,SFNE,LC,GE,QP,Camden,Lakemont,Knoebels, SFO,CP,

Living in eastern PA Knoebels is my closest park. For me the next closest park is Hershey about an hour and 15 minute drive. Dorney is about and hour and a half drive as well. From Hershey Williams Grove is about a 30-45 minute drive. Dutch Wonderland is also about 45 minutes to an hour from Hershey as well. From Dorney Bushkill Park is (I'm guessing since I was never there) probably about 45 minutes away.

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Parks hit for 2000!
PKD,BGW,DP,HP,PKI,HW,SFKK,SFA,SFNE,LC,GE,QP,Camden,Lakemont,Knoebels, SFO,CP,