IEEE Spectrum April, 2014 - 45

caDiLLac
cTS

not your father's
land yacht
There is a long history
of american carmakers
trying-and usually failing-
to beat German sports
sedans. But cadillac
triumphs with the cTs's
superlative chassis,
steering, and suspension,
which make a Bmw
5-series or an audi a6 feel
tame in comparison.
once notorious for
lumbering land yachts, caddy
applied a ruthless gram-bygram strategy to trim weight.
The doors, hood, subframe,
brake calipers, front
suspension, and bumper
beam are all aluminum.
The engine mounts are not

aluminum-too heavy. The
new magnesium mounts
weigh 680 grams less
than the old aluminum
ones. despite being larger,
the base cTs weighs
113 kilograms (250 pounds)
less than its predecessor, a
lightest-in-class 1655 kg.
a trio of engine options
starts with a 204-kilowatt
(272-horsepower), 2.0-liter
turbo four and peaks with
a real beauty: the vsport
edition's 313 kw twin-turbo
v-6-the most powerful v-6 in
Gm history. The combination
of two fast-acting turbos
and very short paths for
both exhaust gases and
compressed air dramatically
reduces "turbo lag"-
the time it takes the engine
to respond when you step
on the accelerator. it also
produces 583 newton meters
of torque, 176 nm more than
the Bmw's turbo v-6.

Price: US $51 925 Power PlanT: 313 kw (420 hp) 3.6-L twin-turbo V-6
overall fuel economy: 13 L/100 km (18 mpg)

The vsport girds its
loins with an electronic
limited-slip differential,
a quicker steering ratio,
20 percent stiffer springs,
larger antiroll bars (to
keep the car level in a turn),
and the aggressive Track
mode for stability control.
so equipped, the vsport
charges from 0 to 60 miles
per hour (97 kilometers
per hour) in 4.6 seconds,
achieves 0.97 g of tire grip
on a skid pad, and halts from

SpectrUm.ieee.orG

|

113 km/h in 45 meters.
Those are numbers you'd
associate with a two-seat
sports car, not a roomy
midsize luxury sedan.
The cadillac drives with
bank-vault solidity and
smoothness, with available
all-wheel-drive and a cabin
rich in tech and trims such
as carbon fiber, aluminum,
or burl walnut. in tandem
with its smaller aTs sibling,
the cTs is good enough to
impress even the Germans. n

north american

|

apr 2014

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45



http://SpectrUm.ieee.orG

Table of Contents for the Digital Edition of IEEE Spectrum April, 2014

IEEE Spectrum April, 2014 - Cover1
IEEE Spectrum April, 2014 - Cover2
IEEE Spectrum April, 2014 - 1
IEEE Spectrum April, 2014 - 2
IEEE Spectrum April, 2014 - 3
IEEE Spectrum April, 2014 - 4
IEEE Spectrum April, 2014 - 5
IEEE Spectrum April, 2014 - 6
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IEEE Spectrum April, 2014 - 8
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IEEE Spectrum April, 2014 - 44
IEEE Spectrum April, 2014 - 45
IEEE Spectrum April, 2014 - 46
IEEE Spectrum April, 2014 - 47
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IEEE Spectrum April, 2014 - 49
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IEEE Spectrum April, 2014 - 58
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IEEE Spectrum April, 2014 - 60
IEEE Spectrum April, 2014 - 61
IEEE Spectrum April, 2014 - 62
IEEE Spectrum April, 2014 - 63
IEEE Spectrum April, 2014 - 64
IEEE Spectrum April, 2014 - 65
IEEE Spectrum April, 2014 - 66
IEEE Spectrum April, 2014 - 67
IEEE Spectrum April, 2014 - 68
IEEE Spectrum April, 2014 - 69
IEEE Spectrum April, 2014 - 70
IEEE Spectrum April, 2014 - 71
IEEE Spectrum April, 2014 - 72
IEEE Spectrum April, 2014 - 73
IEEE Spectrum April, 2014 - 74
IEEE Spectrum April, 2014 - 75
IEEE Spectrum April, 2014 - 76
IEEE Spectrum April, 2014 - Cover3
IEEE Spectrum April, 2014 - Cover4
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