Forecast-Chart.com is forecasting a probability of 8.9% that the 30 Year Mortgage Interest Rate will be higher in 5 years. The table shows a probability of 90.7% that the rate will be lower in 5 years. (October, 2019 rate compared to the October, 2014 rate).
Hydroplaning can occur on any wet road surface, however, the first 10 minutes of a light rain can be the most dangerous. When light rain mixes with oil residue on the road surface, it creates slippery conditions that can cause vehicles, especially those traveling speeds in excess of 35 mph, to hydroplane.
Corcord could go much faster, mach 2. Some military planes much faster still, mach 5. Mach is speed of sound but is not a fixed value. Speed of sound varies with air pressuure. At 35,000 feet (a typical cruising altitude for long haul), mach 1 is about 663mph. Faster planes have to fly higher for lower air resistance & better fuel economy.