"You went 61 in a 60. Here's a ticket. Also, because you broke the law once and I'm in a pedantic mood, I'm issuing a warrant to go through all of your GPS history for the past two years. Oh look, 1 year ago you went 36 in a 35. Another ticket for you. 2 years ago you jaywalked. Another ticket."

At what point do we want the legal system to no longer have the power to scrutinize an individual's history?

I don't believe that a warrant to "ruffle through someone's life" without limits is within the powers of a judge. A warrant to procure relevant evidence to a case being investigated, legally, certainly.

Issuing an order for someone's entire Google history for a year is bordering "an unreasonable search and seizure", by my understanding. Do they have legitimate reason to believe that there is an email containing evidence? Or a document in Google drive? Location data for an entire year - how is this relevant to the case?