This pilot study has been designed to assess whether sugammadex indeed has, compared with neostigmine or placebo, a positive effect on the street fitness of patients and to assess the nature, magnitude and the time of onset of this effect (if any). 30 patients will be randomized in three groups of 10 patients each (sugammadex, neostigmine/glycopyrrolate and no reversal). These numbers are based on practical considerations, as there are no data available to base a sample size calculation on. The data for this study will enable a sample size calculation for a formal well-powered efficacy study. If a supposed effect on alertness can be demonstrated, it may be worthwhile to investigate the mechanism of action as well.