Dear Fernando,
I'd like to thank you at first for such a joyful and awesome experiences. It's been a wonderful thing having you for nearly three years. We've been through so many unexpected moments and situations, both good and bad. 230 km ride in third gear, oil pump failure, had an accident etc are some of unforgettable moments that we had.
Ah... I just wanna say I'm Sorry for what I've done to you and for now I have to let you go.
However, one thing for sure you are the best and the Ultimate Driving Machine 
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