What impressed me the most was the timing of this purchase. I had a flat tire just last week. I have to use this guy. First let me say that my tire was very flat on the rim. Little did I know I had a tractor tire stain in my tire and when the snow got in the tire it deflated. This little nitpick was meant for my bike but given the situation it was worth a try. Holy Moly. That saved the day! This little guy stuck right in my car and was strong enough to inflate a tire long enough for me to get to a tire shop. It took about 5 minutes to inflate the tire. Fast and powerful. Oh, and the light is bright! It's worth every penny