Hey guys, I was drivin on the highway last night with my GF in her Golf behind me. I was hanging out around 65-70 the whole time. Maybe cresting 75 once. After a while she started dropping back.

When we got home I asked her why she didn't keep up. She said she didn't want to be going that fast and said I was like 75-80 the whole time.

What's up? Is her speedo slow and ours fast? Anyone done anything to check how accurate our speedos are at speed?

I realize they aren't supposed to be 100% accurate but it seems like a large gap.