2009 BMW R 1200 RT Vehicle Speed Controlthrottle Problems

On 06-19-2023 i was North bound I275 north of 8 mile about 715pm. I was in the left lane going about 68 mph. All of a sudden my It felt like my throttle cable broke, when I twisted it there was no motor response forward and backward, but my motor was red lining against the Rev limiter, so I pulled in the clutch and it did not slow down at all. Actually I sped up to over 100 mph, thankfully there was noone in front of me, I steadily pulled on the front brake and stepped on the back brake until I came to a stop. The length I went was at least 1 1/2- 2 miles from when I thought the cable broke till I got it stopped. I had it towed to southeast bmw in Plymouth, MI. It's still in the shop as of July 31,2023. So I...