It is difficult to perceive why theoretical control should be introduced into the essentially practical concept of being "in charge of" a motor vehicle, and there is nothing in the language or apparent policy of the provisions in the Motor Vehicle Insurance Act in which the phrase is used to require or support such a conclusion. While a person may be "in charge of" a motor vehicle although not at the time driving it (see, for example, subsection 3(2)), the concept of "being in charge" is less concerned with legal authority than with physical control. Indeed, the legislative use of the phrase in that sense in connection with motor vehicles is well-established in Queensland and elsewhere: see, for example, subsection 16(1)(c) of the Traffic Act 1949, which is concerned with the offence of being "in charge of" a vehicle whilst under the influence of liquor or a drug. Provisions to similar effect are to be found in other jurisdictions. There are numerous reported decision on such provisions, which not surprisingly provide no support for the startling proposition that an employer commits an offence if he or she is drunk at a time when an employee is driving a motor vehicle although the employer is nowhere near the vehicle. By way only of example, see Crichton v. Burrell (1951) SLT 365 and Pryor v. Morgan; ex parte Pryor (1970) QWN 13. In the absence of any persuasive argument to the contrary, no different meaning should be assigned to the phrase "in charge of" in the Motor Vehicles Insurance Act from its established meaning under the Traffic Act. At best for the respondent, the question whether a person is "in charge of" a motor vehicle is one of "fact and degree": D.P.P. v. Watkins (1989) 1 All E.R. 1127, 1129. See also Behrendorff v. Soblusky [1957] HCA 84; (1958) 98 CLR 619; Soblusky v. Egan [1960] HCA 9; (1960) 103 CLR 215, 227. This does not assist the respondent at this point in the proceedings; to succeed at this stage it would need to establish that there is a general principle that, for relevant purposes, an employer is "in charge of" a motor vehicle driven by an employee.