From: The Department of Waaay Too Much Spare Time
Optional background anecdotal drivel:
I’ll blame this discussion on our local High School Girls’ Golf Team. I look forward to Monday Morning Seniors’ League, a fun time, at our local country club.
This past Monday the weather was beautiful for golf, perfect in fact, but we didn’t play because the girls hosted an invitational tournament and about 11 schools were involved, taking up the entire course. We couldn’t play. (Actually, I’m not complaining about these fine young students. My daughter and son were on teams for 4 years in high school. They can be on the lawn!)
I religiously keep a log book of daily cardio/strength training exercise and add entries each day. I woke up Monday morning thinking I was going to go for my 7 mile bicycle ride, but at 7:17 a.m. as it began getting light, I decided I’d go around the lake, instead. Of course I had to push myself around the curvy, hilly course, to beat my old record time.
I got back home and recorded a stop watch time of 1:51:33, shattering my former “old guy’s personal best” record. My wife was just having her first morning coffee!
I did the math using 27.3 miles (from years ago as measured in our 96 Dodge Caravan) as the distance, but wondered If that was the real actual distance. So over the next couple of days I drove the route in the Grand Prix for an odometer reading. Then I drove around with my cell phone using Map My Ride, a GPS app. my kids put on it.
The actual important details:
Dodge Caravan: 27.3 miles
Grand Prix: 27.0 miles
Map My Ride GPS app: 27.5 miles
These distances vary my average speed from 14.52 mph to 14.80 mph. I’d like to know which one is closest. I’d like the faster time. How can I tell?
Another thing… cars once used cable driven odometer/speedometers, then used transmission speed sensors. Do any cars use GPS for speed or distance?