I had this problem recently when it was raining heavily and was driving on I-95 for about 2 hours. Every time I braked it too several seconds for the car to actually start slowing. It felt like I was pressing on nothing, but after I braked a couple of times within a minute, the brakes worked as usual. But a few minutes go by and again I had to brake hard for several seconds before I actually felt the car braking, this was of course very concerning as the only time I really use the brakes is when I do emergency braking, otherwise I just keep a safe distance and let regen slow me down. After this rainstorm, the brakes worked as usual again. So my question is: because I don't use my brakes very often is there water that is getting on the brakes that is decreasing friction to prevent it from properly stopping? In the past with light rain, I did not notice this problem. Or is there a problem with my brakes that I should have the service center check?