In the vehicle of the invention, when the driver releases a depressed
accelerator pedal, the drive control sets a vehicle speed V at the moment
to a target vehicle speed V* (step S440). An engine and a motor for
outputting driving power are controlled to drive the vehicle at the
target vehicle speed V*. When the driver steps on a released brake pedal,
the drive control stores the target vehicle speed V* set before the
driver's depression of the brake pedal as a previous target vehicle speed
Vpre and cancels the setting of the target vehicle speed V* (steps S470
and S480). In response to the driver's subsequent release of the brake
pedal, the drive control sets the vehicle speed V at the moment to the
target vehicle speed V* (step S510) and restarts constant-speed drive
(cruise drive). When the driver turns a steering wheel to or over a
preset degree for a left turn or a right turn, the drive control sets the
previous target vehicle speed V* to the target vehicle speed V* (step
S520) and restarts the constant-speed drive. This arrangement ensures
easy and quick start of the constant-speed drive (cruise drive) and
enables the constant-speed drive (cruise drive) according to the
variation of the driving state.