Something I recently learned in Vegas; if a taxi driver picks you up from a casino on the strip and offers to take you (or does it anyway) the "quicker way" to your destination [also on the strip] via taking some off-strip highway, reject him. A bit of traffic on the strip is nothing compared to how fast the meter flies upwards when a taxi is speeding along a highway via a long detour and it's going to result in you paying a lot more for the journey.