Sauber team boss Monisha Kaltenborn says Formula One needs to "be careful" about exceeding the 20-race mark. Next year's Formula One calendar could comprise more than 20 grands prix with three new venues pencilled in. Austria, New Jersey and Russia are all down to find a place on the calendar although the latter two have had a few hiccups in recent times. But should all three join the schedule, there could be 21 grands prix as only India is set to be dropped. And Kaltenborn has warned that too many races could actually damage the "overall product." "We have to be careful what kind of overall impact this has because we know at the moment 20 races are already quite...
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