I can’t find it now but I believe this test installation cost about $180,000. Regarding getting to Mt Diablo I’ll tell you how I do it. Take the IHT north over Ygnacio Valley Road on the bridge and then to the canal trail and turn east. At Heather Farm Park cross the bridge south and through the park. Cross Ygnacio onto San Carlos and follow Quiet Place through the neighborhood. Left on Snyder to Walnut Ave and then right up to the roundabout and you are on your way. Simple with very quiet streets. Enjoy!