Goico: At Limad2 you can only vote to restart along with the rest of the drivers on the server. Once you are promoted to L3 you will be able to use !restart to force a restart, but this should only be used in the most extreme cases, such as when a crasher or hacker has completely ruined the start of a race.
I assume this is what you mean, as restarting the server is something that can only be done with super admin powers, and only a select few of our members have this ability.
Indeed Jo! You can't press Shift and "r" because once you hold shift the "r" becomes "R". So to restart a race you must yell out your "r" as "R"! Alas, restart (or RESTART! since you're holding Shift...) is Shift + R.