West Virginia unveiled new tourism marketing efforts this week and showcased multimillion dollar park improvements, but state officials are still uncertain how significant the impact of $4 gas will be on travel plans. West Virginia will use an all-new, four-part West Virginia travel guide to try to target tourists with specific interests. State tourism officials are pushing the New River Gorge National Park and Preserve, mountain culture, outdoor recreation and natural wonders through four separate guides. Tourism officials said 100,000 of the guides will go out inserted in magazines.